And they've missed the Google Closure Optimizer for JavaScript:
<a href="http://code.google.com/closure/" rel="nofollow">http://code.google.com/closure/</a>
I wrote a couple of articles a while ago about minifying css/javascript on the fly. They utilise a mod_perl handler which intercepts outgoing css/js and compresses them on the way out.<p><a href="https://secure.grepular.com/Compressing_CSS_on_the_Fly" rel="nofollow">https://secure.grepular.com/Compressing_CSS_on_the_Fly</a><p><a href="https://secure.grepular.com/Compressing_JavaScript_on_the_Fly" rel="nofollow">https://secure.grepular.com/Compressing_JavaScript_on_the_Fl...</a>
If anyone uses Kohana I maintain a packaged which wraps the PHP cssmin and jsmin libraries (plus some Kohana juice for serving files/caching)<p><a href="http://hg.errant.me.uk/minify" rel="nofollow">http://hg.errant.me.uk/minify</a><p>There is also a port (or rewrite) for Kohana V3 that someone else maintains <a href="http://github.com/zazu/minify" rel="nofollow">http://github.com/zazu/minify</a>
For the Django dudes in here:<p><a href="http://github.com/miracle2k/django-assets" rel="nofollow">http://github.com/miracle2k/django-assets</a> with which you can use your compressor of choice<p><a href="http://elsdoerfer.name/docs/django-assets/" rel="nofollow">http://elsdoerfer.name/docs/django-assets/</a>
Two months ago I hooked up jsmin from a build script for release configurations. It's been helpful to have all of the reader-friendly stuff stripped out automatically without having to store minified copies in source control.
For .NET websites, Combres does minifying, compression, and combining of scripts:
<a href="http://combres.codeplex.com/" rel="nofollow">http://combres.codeplex.com/</a>